The Forgotten Keys FK5 Kontakt instrument is based on the Roland Rhythm-77 (AKA TR-77) drum machine, which was the first product launched under the Roland brand name in 1972. It was essentially an updated Ace Tone FR7L. The wooden case and music rest are tell-tale signs that this was primarily designed to sit on top of a home organ. Being top-of-the-range, it had a few bells and whistles (not literally), such as volume sliders for individual sounds and a fade in and out effect. The drum sounds were generated using inductor coils rather than transistors.

The Forgotten Keys FK2 Kontakt instrument is based on 2 Maestro Rhythm King drum machines, the MRK-1 and MRK-2. These American drum machines from the 1960s were large, heavy and solidly built. As well as the transistor-based analogue sound source, they featured 18 combinable rhythms in 3 groups: Latin, American and Traditional. The only difference between the 2 models were a couple of rhythm pattern changes and the inclusion of a balance control and metronome on the MRK-2. These drum machines could also be found in other forms as part of various Lowrey home organs from this period, either built-in or as an optional add-on.

The Forgotten Keys FK10 Kontakt instrument is a close virtual re-creation of the Korg Rhythm-55 (AKA KR-55); an analogue drum machine released in 1979. The KR-55 featured a relatively large array of rhythms for the time as well as improved, more realistic sounds than previous analogue machines. Although the sound generation was all analogue, the rhythm patterns were stored in computer memory unlike previous models where a diode-matrix was used.

The Elka Rhapsody 490 was a string machine, or string synthesizer, produced in the late 1970s. It was an Italian made instrument and was also sold under the brand name Hohner as the String Vox. The Hohner was distinguished from the Elka by its cream or beige colour, but were otherwise identical. It had an organ-based design using the octave divider technique, and was therefore fully polyphonic. It contained 2 modulation circuits that were used to produce the classic shimmering effect that string machines are known for.

In the valley of the Nyimba people, in Nepal, lives Gharjuwa and her family. The Nyimba practise fraternal polyandry where each family is built round a sole household and a sole wife. Gharjuwa is married to all the brothers from one family. This is her story of a life of sharing and solidarity beside her four husbands who bore her four children.

The Forgotten Keys FK8 Kontakt instrument is based on the Maestro Rhythm King MRK-4 analogue drum machine from the mid 1970s. Whereas the MRK-1 and MRK-2 models were transistor based, the MRK-4 used inductor coils, or tuned tanks, to produce the drum sounds. It actually had fewer sounds and rhythms than the previous models, but was less noisy (judging by the examples I owned anyway) and the cymbal sounds were noticeably different. The rhythms provided were more rock orientated and it had an intro/fill-in function.

The Korg Mini-Pops 3 was an analogue drum machine from the 1970s. It was also branded as the Univox SR-55 and Aria Diamond. It had less sounds than its famous sibling, the Mini-Pops 7, and a different approach to the rhythm selection. There were 2 knobs that controlled the bass/snare and cymbal patterns respectively, these were assigned to the foxtrot/swing button. This combination provided 36 patterns for this button alone plus the 18 other rhythms provided.